32008 Adriángalád

32008 Adriángalád
Discovery [1]
Discovered by LINEAR
Discovery site Lincoln Lab's ETS
Discovery date 29 April 2000
Designations
MPC designation (32008) Adriángalád
Named after
 Adrián Galád
(Slovak astronomer)[2]
2000 HM53 · 1994 PZ39
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 24.67 yr (9,012 days)
Aphelion 2.6159 AU
Perihelion 1.7685 AU
2.1922 AU
Eccentricity 0.1933
3.25 yr (1,186 days)
5.9111°
0° 18m 13.32s / day
Inclination 6.3069°
221.84°
144.20°
Known satellites 1 [4][5]
Physical characteristics
Dimensions 3.07 km (calculated)[3]
4.23 km (estimate)[5]
3.0171±0.0001 h[4]
0.24 (assumed)[3]
S [3] · V [6]
14.17±0.01 (R)[4] · 14.44±0.53[6] · 14.5[1] · 14.73±0.103[3][7]

    32008 Adriángalád, provisional designation 2000 HM53, is a stony Flora asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered by LINEAR at Lincoln Laboratory's Experimental Test Site on 29 April 2000. It was named for Slovak astronomer Adrián Galád.[2] Its minor-planet moon was discovered in 2007.

    Orbit and classification

    Adriángalád is a member of the Flora family, one of the largest families of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,186 days). Its orbit has an eccentricity of 0.19 and an inclination of 6° with respect to the ecliptic.[1]

    The asteroid's observation arc begins almost 9 years prior to its official discovery observation, with a precovery taken by the Steward Observatory's Spacewatch survey at Kitt Peak in November 1991.[2]

    Physical characteristics

    Adriángalád has been characterized as a bright V-type asteroid by Pan-STARRS photometric survey.[6]

    Diameter and albedo estimate

    The Collaborative Asteroid Lightcurve Link (CALL) assumes an albedo of 0.24 – derived from 8 Flora, the family's largest member and namesake – and calculates a diameter of 3.07 kilometers with an absolute magnitude of 14.73.[3]

    Rotation period

    A rotational lightcurve of Adriángalád was obtained by Czech astronomer Petr Pravec at Ondřejov Observatory in August 2007. The lightcurve gave a well-defined rotation period of 3.0171 hours with a brightness amplitude of 0.19 in magnitude (U=3).[3][4]

    Satellite

    During the photometric observations it was revealed that Adriángalád is a synchronous binary system, with a minor-planet moon orbiting it every 40.24±0.02 hours.[4] It received the provisional designation S/2007 (32008) 1. The satellite measures approximately 40% of that of its primary,[4] which would give it a diameter of 1.2 and 1.69 kilometers based on CALL's and Johnston's Archive calculations, respectively.[3][5]

    Naming

    This minor planet was named after Slovak astronomer Adrián Galád (born 1970) a discoverer of minor planets and several binary asteroids himself. He is well known for his photometric observations at both Ondřejov and Modra Observatory.[2] The approved naming citation was published by the Minor Planet Center (M.P.C. 100607).[8]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 32008 Adriangalad (2000 HM53)" (2016-07-07 last obs.). Jet Propulsion Laboratory. Retrieved 27 June 2017.
    2. 1 2 3 4 "32008 Adriangalad (2000 HM53)". Minor Planet Center. Retrieved 12 August 2016.
    3. 1 2 3 4 5 6 7 8 "LCDB Data for (32008) Adriangalad". Asteroid Lightcurve Database (LCDB). Retrieved 12 August 2016.
    4. 1 2 3 4 5 6 Pravec, P.; Kusnirak, P.; Hornoch, K.; Vilagi, J.; Kornos, L.; Galad, A.; et al. (September 2007). "(32008) 2000 HM53". Central Bureau Electronic Telegrams (1078). Bibcode:2007CBET.1078....1P. Retrieved 12 August 2016.
    5. 1 2 3 Johnston, Robert (21 June 2016). "(32008) Adriangalad". johnstonsarchive.net. Retrieved 17 June 2017.
    6. 1 2 3 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 12 August 2016.
    7. ↑ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 12 August 2016.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 12 August 2016.
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